Energy Storage Science and Technology ›› 2015, Vol. 4 ›› Issue (4): 394-401.doi: 10.3969/j.issn.2095-4239.2015.04.008

• Research &development • Previous Articles     Next Articles

A 150 kJ/100 kW directly cooled high temperature superconducting electromagnetic energy storage system

XU Ying, REN Li, TANG Yuejin, LI Jingdong, SHI Jing, LIU Yang, LIAO Yuxiang, DENG Jiaxi, WANG Shaorong, SHI Xiaohan, ZUO Wenping, WANG Zhuang   

  1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
  • Received:2014-10-29 Online:2015-08-19 Published:2015-08-19

Abstract: This paper describes a 150kJ/100kW directly cooled high temperature superconducting electromagnetic energy storage (SEMS) system recently designed, built and tested in China. The high temperature superconducting magnet is made from Bi2223/Ag and YBCO tapes, which can be brought to ~17K through direct cooling. Preliminary experiments have shown that the critical current of the superconducting magnet reaches 180A with a maximum energy storage capacity of 157kJ and a maximum central magnetic field of 4.7 T. The 150 kJ/100 kW SMES has been found to respond very rapidly to active and reactive power independently in four quadrants of an AC power system, with a response time of less than 10 ms. It is also shown that, in a dynamic simulated experiment, the SMES can effectively damp power oscillation due to line fault of line to ground at the generator terminal.

Key words: superconducting magnet energy storage (SMES), superconducting magnet, directly cooled, stability of power system

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